Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem concorre ao cargo no distrito Maryland 3?
 ###Tabelas: CREATE TABLE law_enforcement (law_enforcement_id AUTO_INCREMENT PRIMARY KEY, Character VARCHAR, Position VARCHAR, Actor VARCHAR, First Episode VARCHAR, Final Episode VARCHAR, Duration VARCHAR, Final Episode Count INT) CREATE TABLE maryland (maryland_id AUTO_INCREMENT PRIMARY KEY, District VARCHAR, Incumbent VARCHAR, Party VARCHAR, First elected INT, Results VARCHAR, Candidates VARCHAR) CREATE TABLE caucuses (caucuses_id AUTO_INCREMENT PRIMARY KEY, Candidate VARCHAR, State Delegate INT, Percentage VARCHAR, Delegates INT, Counties Carries INT) CREATE TABLE world_championship_group_c_denmark (world_championship_group_c_denmark_id AUTO_INCREMENT PRIMARY KEY, Games INT, Drawn INT, Lost INT, Points difference VARCHAR, Points INT) CREATE TABLE grac_member_information (grac_member_information_id AUTO_INCREMENT PRIMARY KEY, School VARCHAR, Location VARCHAR, Team Name VARCHAR, Colors VARCHAR, Varsity Teams INT, NJCAA Championships INT)  
SELECT Candidates FROM maryland WHERE District = Maryland 3